android *** Toast

最新推荐文章于 2024-04-30 16:01:52 发布

treeshy

最新推荐文章于 2024-04-30 16:01:52 发布

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分类专栏： android

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本文介绍如何在Android应用中使用Toast显示简单的文本消息及自定义视图布局。通过两个按钮触发不同类型的Toast提示，包括预设文本内容的普通Toast和包含自定义视图如文本与图片的Toast。

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可以用toast加载一个xml出来

主xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:android1="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="${relativePackage}.${activityClass}" >

    <Button
        android1:id="@+id/button1"
        android1:layout_width="wrap_content"
        android1:layout_height="wrap_content"
        android1:layout_alignParentTop="true"
        android1:layout_centerHorizontal="true"
        android1:layout_marginTop="62dp"
        android1:text="普通toast" />

    <Button
        android1:id="@+id/button2"
        android1:layout_width="wrap_content"
        android1:layout_height="wrap_content"
        android1:layout_alignRight="@+id/button1"
        android1:layout_below="@+id/button1"
        android1:layout_marginRight="38dp"
        android1:layout_marginTop="31dp"
        android1:text="自定义toast" />

    

</RelativeLayout>

加载出的xml

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

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20sp"
        android:textColor="#FF8000" />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/s1" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />

</LinearLayout>

java

package com.example.tree;

import android.support.v7.app.ActionBarActivity;
import android.text.Html;
import android.text.Spanned;
import android.text.method.LinkMovementMethod;
import android.util.Log;

import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;

import android.app.AlertDialog;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.app.ProgressDialog;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.*;
import android.view.View.OnClickListener;
import android.view.View.OnKeyListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.AnalogClock;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.RatingBar;
import android.widget.RatingBar.OnRatingBarChangeListener;
import android.widget.ScrollView;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.TimePicker;
import android.widget.TimePicker.OnTimeChangedListener;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity {

	private Button button,button2;
	private final String TAG="MainActivity";
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		Log.i(TAG, "-onCreate-->>");
		button=(Button)this.findViewById(R.id.button1);
		button2=(Button)this.findViewById(R.id.button2);
		button.setOnClickListener(new OnClickListener(){

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Toast toast=Toast.makeText(MainActivity.this, "test", 1);
				toast.setGravity(Gravity.TOP|Gravity.LEFT, 0, 0);
				toast.show();
			}
			
		});

		button2.setOnClickListener(new OnClickListener(){

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Toast toast=new Toast(MainActivity.this);
				View layout=LayoutInflater.from(MainActivity.this).inflate(R.layout.linear, null);
				TextView textView=(TextView)layout.findViewById(R.id.textView1);
				textView.setText("Hello World");
				toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
				toast.setDuration(Toast.LENGTH_SHORT);
				toast.setView(layout);
				toast.show();
			}
			
		});
	}

	
	protected void onStart(){
		super.onStart();
		Log.i(TAG, "-onStart-->>");
	}
	
	protected void onRestart(){
		super.onRestart();
		Log.i(TAG, "-onRestart-->>");
	}
	
	protected void onResume(){
		super.onResume();
		Log.i(TAG, "-onResume-->>");
	}
	
	protected void onPause(){
		super.onPause();
		Log.i(TAG, "-onPause-->>");
	}
	
	protected void onStop(){
		super.onStop();
		Log.i(TAG, "-onStop-->>");
	}
	
	protected void onDestroy(){
		super.onDestroy();
		Log.i(TAG, "-onDestroy-->>");
	}
	
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, 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();
		if (id == R.id.action_settings) {
			return true;
		}
		return super.onOptionsItemSelected(item);
	}
}