当我尝试在 Nexus 5 (Android 6 M) 上启动我的应用程序时，一切正常，但当我尝试从 Galaxy S4 (4.4) 或其他 Kitkat 设备或模拟器启动它时，我的应用程序崩溃了白屏，然后崩溃，或者立即崩溃。
Android 监视器:
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: FATAL EXCEPTION: main
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: Process: com.iotech.discover, PID: 12397
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: java.lang.OutOfMemoryError
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:677)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:507)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:872)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.content.res.Resources.loadDrawable(Resources.java:3024)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.content.res.Resources.getDrawable(Resources.java:1586)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.view.Window.setBackgroundDrawableResource(Window.java:1035)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at com.iotech.discover.LoginActivity.onCreate(LoginActivity.java:50)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.app.Activity.performCreate(Activity.java:5426)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2269)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2363)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.app.ActivityThread.access$900(ActivityThread.java:161)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1265)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:102)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.os.Looper.loop(Looper.java:157)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:5356)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:515)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
11-03 14:28:48.536 12397-12397/com.iotech.discover E/AndroidRuntime: at dalvik.system.NativeStart.main(Native Method)
我认为这是因为我使用了位图背景，但由于我有 4 个不同的错误，所以我不知道它来自哪里，而且它之前一直有效。
编辑:我的可绘制对象位于可绘制文件夹中，这是我的主要 Activity :
public class LoginActivity extends AppCompatActivity {
private static final String TAG = "LoginActivity";
private static final int REQUEST_SIGNUP = 0;
@InjectView(R.id.input_email)
EditText _emailText;
@InjectView(R.id.input_password)
EditText _passwordText;
@InjectView(R.id.btn_login)
Button _loginButton;
@InjectView(R.id.link_signup)
TextView _signupLink;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
getWindow().setBackgroundDrawableResource(R.drawable.mlogin_paris_aerian);
ButterKnife.inject(this);
if (!isInternetConnected()) {
alertDialogNoInternet();
}
_loginButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
login();
}
});
_signupLink.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Start the Signup activity
Intent intent = new Intent(getApplicationContext(), SignupActivity.class);
startActivityForResult(intent, REQUEST_SIGNUP);
}
});
}
public void login() {
Log.d(TAG, "Login");
if (!validate()/* || !isConnected()*/) {
onLoginFailed();
return;
}
_loginButton.setEnabled(false);
final ProgressDialog progressDialog = new ProgressDialog(LoginActivity.this,
R.style.AppTheme_Dark_Dialog);
progressDialog.setIndeterminate(true);
progressDialog.setMessage(getString(R.string.login_authentication));
progressDialog.show();
String email = _emailText.getText().toString();
String password = _passwordText.getText().toString();
// TODO : onLoginSuccess si auth ok côté serveur
Context context = getApplicationContext();
loginAPI(context, email, password);
public boolean isInternetConnected(){
ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Activity.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isConnected())
return true;
else
return false;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_SIGNUP) {
if (resultCode == RESULT_OK) {
// TODO: Implement successful signup logic here
// By default we just finish the Activity and log them in automatically
this.finish();
}
}
}
@Override
public void onBackPressed() {
// Disable going back to the MainActivity
moveTaskToBack(true);
}
public void onLoginSuccess() {
_loginButton.setEnabled(true);
finish();
}
public void onLoginFailed() {
Toast.makeText(getBaseContext(), R.string.login_failed, Toast.LENGTH_LONG).show();
_loginButton.setEnabled(true);
}
public boolean validate() {
boolean valid = true;
String email = _emailText.getText().toString();
String password = _passwordText.getText().toString();
onLoginSuccess();
return valid;
}
public void alertDialogNoInternet (){
AlertDialog.Builder builder1 = new AlertDialog.Builder(this);
builder1.setTitle(getString(R.string.nointernet_title));
builder1.setMessage(getString(R.string.nointernet_message));
builder1.setCancelable(true);
builder1.setPositiveButton(getString(R.string.ok),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Toast.makeText(getApplicationContext(),
"Merci", Toast.LENGTH_SHORT)
.show();
//dialog.cancel();
}
});
builder1.setNegativeButton(getString(R.string.cancel),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert11 = builder1.create();
alert11.show();
}
public static void loginAPI (Context context, final String mail, final String password) {
JSONObject obj = new JSONObject();
try {
obj.put("email", mail);
obj.put("password", password);
} catch (JSONException e) {
e.printStackTrace();
}
RequestQueue queue = Volley.newRequestQueue(context);
JsonObjectRequest jsObjRequest = new JsonObjectRequest(Request.Method.POST, "http://46.101.218.111/api/v1/auth",obj,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
System.out.println(response);
//hideProgressDialog();
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
//hideProgressDialog();
System.out.println(error);
}
});
queue.add(jsObjRequest);
}
}
最佳答案
将导致崩溃的drawable放在drawable-xxhdpi或drawable-xhdpi中(选择更适合您的图像的文件夹)。
可能您的图像已经是高分辨率的，但由于它被放置在可绘制中，因此它被视为 mdpi 图像，并且操作系统会对其进行缩放。
请记住，图像大小(以 KB 为单位)并不是内存消耗的主要因素。
关于Java OutOfMemory 异常无法在 Lollipop 之前的设备上启动应用程序，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33500499/