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private Button bt_add;
private ImageView iv_local;
private SharedPreferences sp;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
iv_local = (ImageView) findViewById(R.id.iv_loacl);
sp = getSharedPreferences("imagepath", MODE_PRIVATE);
String path = sp.getString("path", "");
if ("".equals(path) == false) {
System.out.println("保存的图片路径为:"+ path);
try {
ContentResolver resolver = getContentResolver();
Uri uri = Uri.parse(path);
Bitmap bitmap = BitmapFactory.decodeStream(resolver.openInputStream(uri));
iv_local.setImageBitmap(bitmap);
} catch (Exception e) {
// TODO Auto-generated catch block
Toast.makeText(this, "图片未找到!", Toast.LENGTH_SHORT).show();
}
}
bt_add = (Button) findViewById(R.id.bt_add);
bt_add.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent();
/* 开启Pictures画面Type设定为image */
intent.setType("image/*");
/* 使用Intent.ACTION_GET_CONTENT这个Action */
intent.setAction(Intent.ACTION_GET_CONTENT);
/* 取得相片后返回本画面 */
startActivityForResult(intent, 1);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
//用户点击所需的图片后,返回一个uri
Uri uri = data.getData();
Log.e("uri", uri.toString());
try {
ContentResolver resolver = this.getContentResolver();
Bitmap bitmap = BitmapFactory.decodeStream(resolver.openInputStream(uri));
iv_local.setImageBitmap(bitmap);
//将得到的图片的路径保存在SharedPreferences中
sp = getSharedPreferences("imagepath", MODE_PRIVATE);
Editor editor = sp.edit();
editor.putString("path", uri.toString());
editor.commit();
}catch (IOException e) {
Log.e("Exception", e.getMessage(), e);
}
}
super.onActivityResult(requestCode, resultCode, data);
}