AndroidSharedpreference資料共用,androidpreference
一個應用訪問另一個應用的資料。前提是被訪問應用的資料必須是全域可見的。
步驟:
1、擷取另一個應用的上下文
packageName是應用的包名
other=createPackageContext(packageName, CONTEXT_IGNORE_SECURITY);
2、獲得SharedPreferences對象。
具體demo代碼如下:
public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}public void onPhone(View v){Intent intent = new Intent(Intent.ACTION_CALL,Uri.parse("tel:"+getOherAppXml("com.example.phonewrite") ));startActivity(intent);MainActivity.this.finish();System.exit(0);}private String getOherAppXml(String packageName){Context other=null;try {other=createPackageContext(packageName, CONTEXT_IGNORE_SECURITY);SharedPreferences preferences=other.getSharedPreferences("Config", other.MODE_WORLD_READABLE);return preferences.getString("phone", "13047220888");} catch (NameNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}return null;}}
被訪問應用的關鍵代碼如下:
public class MainActivity extends ActionBarActivity {private EditText mEditText;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mEditText=(EditText) findViewById(R.id.ed_write_phone);}public void onPhone(View v){SharedPreferences preferences=getSharedPreferences("Config",MODE_WORLD_READABLE);preferences.edit().putString("phone", mEditText.getText().toString().trim()).commit();Toast.makeText(MainActivity.this,"提交成功",0).show();}}