Content-InstallApk
本Activity主要演示如何使用INSTALL_PACKAGE来安装应用程序
下面看一下布局和代码
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:padding="4dip"
android:gravity="center_horizontal"
android:layout_width="match_parent" android:layout_height="match_parent">
<TextView
android:layout_width="match_parent" android:layout_height="wrap_content"
android:layout_weight="0"
android:paddingBottom="4dip"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Demonstrates using the INSTALL_PACKAGE Intent to install an application."/>
<Button android:id="@+id/unknown_source"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="Unknown Source">
</Button>
<Button android:id="@+id/my_source"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="My Source">
</Button>
<Button android:id="@+id/replace"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="Replace">
</Button>
<Button android:id="@+id/uninstall"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="Uninstall">
</Button>
<Button android:id="@+id/uninstall_result"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="Uninstall w/Result">
</Button>
</LinearLayout>
public class InstallApk extends Activity {
static final int REQUEST_INSTALL = 1;
static final int REQUEST_UNINSTALL = 2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.install_apk);
// Watch for button clicks.
Button button = (Button)findViewById(R.id.unknown_source);
button.setOnClickListener(mUnknownSourceListener);
button = (Button)findViewById(R.id.my_source);
button.setOnClickListener(mMySourceListener);
button = (Button)findViewById(R.id.replace);
button.setOnClickListener(mReplaceListener);
button = (Button)findViewById(R.id.uninstall);
button.setOnClickListener(mUninstallListener);
button = (Button)findViewById(R.id.uninstall_result);
button.setOnClickListener(mUninstallResultListener);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == REQUEST_INSTALL) {
if (resultCode == Activity.RESULT_OK) {
Toast.makeText(this, "Install succeeded!", Toast.LENGTH_SHORT).show();
} else if (resultCode == Activity.RESULT_CANCELED) {
Toast.makeText(this, "Install canceled!", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "Install Failed!", Toast.LENGTH_SHORT).show();
}
} else if (requestCode == REQUEST_UNINSTALL) {
if (resultCode == Activity.RESULT_OK) {
Toast.makeText(this, "Uninstall succeeded!", Toast.LENGTH_SHORT).show();
} else if (resultCode == Activity.RESULT_CANCELED) {
Toast.makeText(this, "Uninstall canceled!", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "Uninstall Failed!", Toast.LENGTH_SHORT).show();
}
}
}
private OnClickListener mUnknownSourceListener = new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
intent.setData(Uri.fromFile(prepareApk("HelloActivity.apk")));
startActivity(intent);
}
};
private OnClickListener mMySourceListener = new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
intent.setData(Uri.fromFile(prepareApk("HelloActivity.apk")));
intent.putExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, true);
intent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
intent.putExtra(Intent.EXTRA_INSTALLER_PACKAGE_NAME,
getApplicationInfo().packageName);
startActivityForResult(intent, REQUEST_INSTALL);
}
};
private OnClickListener mReplaceListener = new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
intent.setData(Uri.fromFile(prepareApk("HelloActivity.apk")));
intent.putExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, true);
intent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
intent.putExtra(Intent.EXTRA_ALLOW_REPLACE, true);
intent.putExtra(Intent.EXTRA_INSTALLER_PACKAGE_NAME,
getApplicationInfo().packageName);
startActivityForResult(intent, REQUEST_INSTALL);
}
};
private OnClickListener mUninstallListener = new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_UNINSTALL_PACKAGE);
intent.setData(Uri.parse(
"package:com.example.android.helloactivity"));
startActivity(intent);
}
};
private OnClickListener mUninstallResultListener = new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_UNINSTALL_PACKAGE);
intent.setData(Uri.parse(
"package:com.example.android.helloactivity"));
intent.putExtra(Intent.EXTRA_RETURN_RESULT, true);
startActivityForResult(intent, REQUEST_UNINSTALL);
}
};
private File prepareApk(String assetName) {
// Copy the given asset out into a file so that it can be installed.
// Returns the path to the file.
byte[] buffer = new byte[8192];
InputStream is = null;
FileOutputStream fout = null;
try {
is = getAssets().open(assetName);
fout = openFileOutput("tmp.apk", Context.MODE_WORLD_READABLE);
int n;
while ((n=is.read(buffer)) >= 0) {
fout.write(buffer, 0, n);
}
} catch (IOException e) {
Log.i("InstallApk", "Failed transferring", e);
} finally {
try {
if (is != null) {
is.close();
}
} catch (IOException e) {
}
try {
if (fout != null) {
fout.close();
}
} catch (IOException e) {
}
}
return getFileStreamPath("tmp.apk");
}
}