day23

安卓第二天

this.requestWindowFeature(Window.FEATURE_NO_TITLE);
取消掉页面的标题

screenOritation———横竖屏

带有返回值的启动方式

第一个界面调用startActivityForResult（intent，requestCode）
第二个界面先调用getIntent（）得到启动的Intent
关闭第二个界面前先封装数据intent.putExtra(“secondbackdata”,editText.getText().toString());
设置resultCode setResult（RESULT_OK,intent）;
关闭第二个界面

第一个界面准备接受数据
重写onActivityResult（requestCode,resultCode,Intnet data）
判断resultCode
然后从data中取出数据

import android.app.Activity;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {

    private TextView textView;
    private Intent intent;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //这句话的意思是去除掉屏幕最上方的状态栏（包括电池状态和时间的一栏）
        this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_main);
        textView = (TextView) findViewById(R.id.text0);
        Log.d("Application000","onCreate运行");
        Button btn = (Button)findViewById(R.id.button0);
        //设置“开启第二个界面”按钮的点击事件
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(getApplicationContext(),SecondActivity.class);
                startActivityForResult(intent,1);//第二个值是随机设定的
            }
        });
    }

    @Override
    protected void onRestart() {
        super.onRestart();
        Log.d("Application000","onRestart运行");
    }

    @Override
    protected void onStart(){
        super.onStart();
        Log.d("Application000","onStart运行");
    }
    @Override
    protected void onResume(){
        super.onResume();
        Log.d("Application000","onResume运行");
    }
    @Override
    protected void onPause(){
        super.onPause();
        Log.d("Application000","onPause运行");
    }
    @Override
    protected void onStop(){
        super.onStop();
        Log.d("Application000","onStop运行");
    }
    @Override
    protected void onDestroy(){
        super.onDestroy();
        Log.d("Application000","onDestroy运行");
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(resultCode==RESULT_OK){
            //将Intent对象中对应的值提取，并且显示到textView上
            String s =data.getStringExtra("secondBackData");
            textView.setText(s);
        }
    }
}

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

/**
 * Created by Administrator on 2015/8/18.
 */
public class SecondActivity extends Activity {
    private Button button;
    private EditText editText;
    private Intent intent;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
        intent =  getIntent();
        button =(Button)findViewById(R.id.button_back);//通过ID找到返回按钮
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //将文本框的数据传给intnet对象
                intent.putExtra("secondBackData",editText.getText().toString());
                setResult(RESULT_OK,intent);
                SecondActivity.this.finish();//关闭窗口
            }
        });
        editText = (EditText) findViewById(R.id.editText);

        Log.d("Application000", "SecondActivity的onCreate运行");
    }
    @Override
    protected void onStart(){
        super.onStart();
        Log.d("Application000","SecondActivity的onStart运行");
    }
    @Override
    protected void onResume(){
        super.onResume();
        Log.d("Application000","SecondActivity的onResume运行");
    }
    @Override
    protected void onPause(){

        super.onPause();
        Log.d("Application000","SecondActivity的onPause运行");
    }
    @Override
    protected void onStop(){
        super.onStop();
        Log.d("Application000","SecondActivity的onStop运行");
    }
    @Override
    protected void onDestroy(){
        super.onDestroy();
        Log.d("Application000","SecondActivity的onDestroy运行");
    }

}

页面编辑

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

    <TextView
        android:text=""
        android:layout_width="wrap_content"
        android:id="@+id/text0"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true" />

    <Button
        android:id="@+id/button0"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="运行第二个界面"
        android:layout_below="@string/text_Id"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="70dp" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="left">

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/editText" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="得到返回值"
        android:id="@+id/button_back" />
</LinearLayout>

运行结果：

用一个界面完成打电话，发短信，打开网页，以及隐式运行

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class Intent_test000 extends Activity {
    private Button button_Dial;
    private Button button1_Call;
    private Button button_SMS;
    private Button button_Web;
    private Button button_Hide;
    private EditText edit_Text;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_intent_test000);
        edit_Text= (EditText) findViewById(R.id.editText_hidein);
        button_Hide= (Button) findViewById(R.id.button_hide);
        button_Hide.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent intent = new Intent("com.example.administrator.helloworld000");
                intent.putExtra("edit000",edit_Text.getText().toString());
                startActivity(intent);
            }
        });
        button_Web= (Button) findViewById(R.id.button_web);
        button_Web.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setAction(Intent.ACTION_VIEW);
                intent.setData(Uri.parse("http://www.baidu.com"));
                startActivity(intent);
            }
        });
        button_SMS= (Button) findViewById(R.id.button_sms);
        button_SMS.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setAction(Intent.ACTION_SENDTO);
                intent.setData(Uri.parse("smsto:13140168180"));
                intent.putExtra("sms_body","The SMS text");
                startActivity(intent);
            }
        });
        button_Dial= (Button)findViewById(R.id.button_dial);
        button_Dial.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setAction(Intent.ACTION_DIAL);
                intent.setData(Uri.parse("tel:13140168180"));
                startActivity(intent);
            }
        });
        button1_Call= (Button)findViewById(R.id.button_call);
        button1_Call.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setAction(Intent.ACTION_CALL);
                intent.setData(Uri.parse("tel:13140168180"));
                startActivity(intent);
            }
        });

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_intent_test000, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

import android.app.Activity;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {

    private TextView textView;
    private Intent intent;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //这句话的意思是去除掉屏幕最上方的状态栏（包括电池状态和时间的一栏）
        this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_main);
        textView = (TextView) findViewById(R.id.text0);
        intent=getIntent();
        String k = intent.getStringExtra("edit000");
        textView.setText(k);
        Log.d("Application000","onCreate运行");
        Button btn = (Button)findViewById(R.id.button0);
        //设置“开启第二个界面”按钮的点击事件
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(getApplicationContext(),SecondActivity.class);
                startActivityForResult(intent,1);//第二个值是随机设定的
            }
        });
    }

    @Override
    protected void onRestart() {
        super.onRestart();
        Log.d("Application000","onRestart运行");
    }

    @Override
    protected void onStart(){
        super.onStart();
        Log.d("Application000","onStart运行");
    }
    @Override
    protected void onResume(){
        super.onResume();
        Log.d("Application000","onResume运行");
    }
    @Override
    protected void onPause(){
        super.onPause();
        Log.d("Application000","onPause运行");
    }
    @Override
    protected void onStop(){
        super.onStop();
        Log.d("Application000","onStop运行");
    }
    @Override
    protected void onDestroy(){
        super.onDestroy();
        Log.d("Application000","onDestroy运行");
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(resultCode==RESULT_OK){
            //将Intent对象中对应的值提取，并且显示到textView上
            String s =data.getStringExtra("secondBackData");
            textView.setText(s);
        }
    }
}

因为隐式运行时运行的上一个程序，所以只把不同的那段代码放上来
页面编辑：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context="com.example.administrator.helloworld000.Intent_test000">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="拨号界面"
        android:id="@+id/button_dial"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="拨打电话"
        android:id="@+id/button_call"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginTop="60dp" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="打开网页"
        android:id="@+id/button_web"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginBottom="85dp" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="发送短信"
        android:id="@+id/button_sms"
        android:layout_centerVertical="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="隐式启动"
        android:id="@+id/button_hide"
        android:layout_alignTop="@+id/button_dial"
        android:layout_toRightOf="@+id/button_dial"
        android:layout_toEndOf="@+id/button_dial"
        android:layout_marginLeft="107dp"
        android:layout_marginStart="107dp" />

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/editText_hidein"
        android:layout_below="@+id/button_call"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />
</RelativeLayout>

运行结果：

拨号界面：

拨打电话：

发送短信：

打开网页：

隐式启动：