动态加载拍照和本地图片并移除的方法

<Button
android:id="@+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="照相机" />

<Button
android:id="@+id/button2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="图库" />

<ImageView
android:id="@+id/imageview1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />

<Button
android:id="@+id/button3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="删除" />

private Button button1, button2, button3;
private ImageView imageView;
private final int PICK = 1;// 选择图片库
private final int IMAGE_RESULT_CODE = 2;// 表示打开照相机
private Bitmap bitmap;

// 使用意图回传值的结果码
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button1 = (Button) findViewById(R.id.button1);
button2 = (Button) findViewById(R.id.button2);
button3 = (Button) findViewById(R.id.button3);

imageView = (ImageView) findViewById(R.id.imageview1);

button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// 使用意图 直接调用安装在手机上的照相机
// 直接开发Camera硬件
Intent intent = new Intent(
android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, IMAGE_RESULT_CODE);// 打开照相机
}
});

button2.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View arg0) {
Intent intent = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, PICK);// 打开照相机
}
});
button3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
imageView.setImageDrawable(null);
}
});
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
// 表示 调用照相机拍照
case IMAGE_RESULT_CODE:
if (resultCode == RESULT_OK) {
Bundle bundle = data.getExtras();
bitmap = (Bitmap) bundle.get("data");
imageView.setImageBitmap(bitmap);
}
break;
// 选择图片库的图片
case PICK:
if (resultCode == RESULT_OK) {
Uri uri = data.getData();
imageView.setImageURI(uri);
}
break;
}

}