使用Intent 调用系统自带的相机App进行拍照。
package com.jiangge.cameraintentdemo;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
public class MainActivity extends Activity {
private ImageView imageView; //用于显示拍照结果
private Button btnTakePhoto; //拍照按钮
private Bitmap bmp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnTakePhoto = (Button) findViewById(R.id.btnTakePhoto);
imageView = (ImageView) findViewById(R.id.imgvTakePhoto);
btnTakePhoto.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, 0);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
bmp = (Bitmap) extras.get("data");
imageView.setImageBitmap(bmp);
}
}
}
File: res/layout/activity_main.xml
<LinearLayout 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:orientation="vertical"
tools:context=".MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/desc_info" />
<Button
android:id="@+id/btnTakePhoto"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/take_photo" />
<ImageView
android:id="@+id/imgvTakePhoto"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FFFFFF"/>
</LinearLayout >
File:res/values/strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">CameraIntentDemo</string>
<string name="action_settings">Settings</string>
<string name="hello_world">Hello world!</string>
<string name="desc_info">通过Inten实现照相功能</string>
<string name="take_photo">拍照</string>
</resources>
运行效果:
点击拍照按钮后:
注意:使用AVD要确保给它分配SDCard空间了: