Question

我正在为我的图像使用150 DPI。在我看来，他们真的不是那么大，这是一个相当大的项目。如何在Android应用中增加虚拟内存？

以下是控制台中的内容：

W/art: Throwing OutOfMemoryError "Failed to allocate a 409534333 byte allocation with 9927994 free bytes and 177MB until OOM"
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: app.com.example.android.brainboost, PID: 3817
                  java.lang.OutOfMemoryError: Failed to allocate a 409534333 byte allocation with 9927994 free bytes and 177MB until OOM
                      at com.android.tools.fd.runtime.FileManager.readRawBytes(FileManager.java:831)
                      at com.android.tools.fd.runtime.FileManager.checkInbox(FileManager.java:249)
                      at com.android.tools.fd.runtime.BootstrapApplication.createResources(BootstrapApplication.java:126)
                      at com.android.tools.fd.runtime.BootstrapApplication.attachBaseContext(BootstrapApplication.java:235)
                      at android.app.Application.attach(Application.java:187)
                      at android.app.Instrumentation.newApplication(Instrumentation.java:1020)
                      at android.app.Instrumentation.newApplication(Instrumentation.java:1004)
                      at android.app.LoadedApk.makeApplication(LoadedApk.java:573)
                      at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4749)
                      at android.app.ActivityThread.access$1600(ActivityThread.java:163)
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1424)
                      at android.os.Handler.dispatchMessage(Handler.java:102)
                      at android.os.Looper.loop(Looper.java:148)
                      at android.app.ActivityThread.main(ActivityThread.java:5491)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)

这是我的代码：

package app.com.example.android.brainboost;

import android.media.MediaPlayer;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.view.View;

public class delta extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_delta);
    }

    MediaPlayer mp3;
    public void level_eight(View view){

        mp3 = MediaPlayer.create(this, R.raw.d_zero_five);

        PhoneStateListener phoneStateListener = new PhoneStateListener() {
            @Override
            public void onCallStateChanged(int state, String incomingNumber) {
                if (state == TelephonyManager.CALL_STATE_RINGING) {
                    mp3.pause();
                } else if(state == TelephonyManager.CALL_STATE_IDLE) {
                    mp3.start();
                } else if(state == TelephonyManager.CALL_STATE_OFFHOOK) {
                    mp3.pause();
                }
                super.onCallStateChanged(state, incomingNumber);
            }
        };
        TelephonyManager mgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
        if(mgr != null) {
            mgr.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
        }
    }

    public void level_seven(View view){

        mp3 = MediaPlayer.create(this, R.raw.d_one);

        PhoneStateListener phoneStateListener = new PhoneStateListener() {
            @Override
            public void onCallStateChanged(int state, String incomingNumber) {
                if (state == TelephonyManager.CALL_STATE_RINGING) {
                    mp3.pause();
                } else if(state == TelephonyManager.CALL_STATE_IDLE) {
                    mp3.start();
                } else if(state == TelephonyManager.CALL_STATE_OFFHOOK) {
                    mp3.pause();
                }
                super.onCallStateChanged(state, incomingNumber);
            }
        };
        TelephonyManager mgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
        if(mgr != null) {
            mgr.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
        }
    }

    public void level_six(View view){

        mp3 = MediaPlayer.create(this, R.raw.d_one_five);

        PhoneStateListener phoneStateListener = new PhoneStateListener() {
            @Override
            public void onCallStateChanged(int state, String incomingNumber) {
                if (state == TelephonyManager.CALL_STATE_RINGING) {
                    mp3.pause();
                } else if(state == TelephonyManager.CALL_STATE_IDLE) {
                    mp3.start();
                } else if(state == TelephonyManager.CALL_STATE_OFFHOOK) {
                    mp3.pause();
                }
                super.onCallStateChanged(state, incomingNumber);
            }
        };
        TelephonyManager mgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
        if(mgr != null) {
            mgr.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
        }
    }

    public void level_five(View view){

        mp3 = MediaPlayer.create(this, R.raw.d_two);

        PhoneStateListener phoneStateListener = new PhoneStateListener() {
            @Override
            public void onCallStateChanged(int state, String incomingNumber) {
                if (state == TelephonyManager.CALL_STATE_RINGING) {
                    mp3.pause();
                } else if(state == TelephonyManager.CALL_STATE_IDLE) {
                    mp3.start();
                } else if(state == TelephonyManager.CALL_STATE_OFFHOOK) {
                    mp3.pause();
                }
                super.onCallStateChanged(state, incomingNumber);
            }
        };
        TelephonyManager mgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
        if(mgr != null) {
            mgr.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
        }
    }

    public void level_four(View view){

        mp3 = MediaPlayer.create(this, R.raw.d_two_five);

        PhoneStateListener phoneStateListener = new PhoneStateListener() {
            @Override
            public void onCallStateChanged(int state, String incomingNumber) {
                if (state == TelephonyManager.CALL_STATE_RINGING) {
                    mp3.pause();
                } else if(state == TelephonyManager.CALL_STATE_IDLE) {
                    mp3.start();
                } else if(state == TelephonyManager.CALL_STATE_OFFHOOK) {
                    mp3.pause();
                }
                super.onCallStateChanged(state, incomingNumber);
            }
        };
        TelephonyManager mgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
        if(mgr != null) {
            mgr.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
        }
    }

    public void level_three(View view){

        mp3 = MediaPlayer.create(this, R.raw.d_three);

        PhoneStateListener phoneStateListener = new PhoneStateListener() {
            @Override
            public void onCallStateChanged(int state, String incomingNumber) {
                if (state == TelephonyManager.CALL_STATE_RINGING) {
                    mp3.pause();
                } else if(state == TelephonyManager.CALL_STATE_IDLE) {
                    mp3.start();
                } else if(state == TelephonyManager.CALL_STATE_OFFHOOK) {
                    mp3.pause();
                }
                super.onCallStateChanged(state, incomingNumber);
            }
        };
        TelephonyManager mgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
        if(mgr != null) {
            mgr.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
        }
    }

    public void level_two(View view){

        mp3 = MediaPlayer.create(this, R.raw.d_three_five);

        PhoneStateListener phoneStateListener = new PhoneStateListener() {
            @Override
            public void onCallStateChanged(int state, String incomingNumber) {
                if (state == TelephonyManager.CALL_STATE_RINGING) {
                    mp3.pause();
                } else if(state == TelephonyManager.CALL_STATE_IDLE) {
                    mp3.start();
                } else if(state == TelephonyManager.CALL_STATE_OFFHOOK) {
                    mp3.pause();
                }
                super.onCallStateChanged(state, incomingNumber);
            }
        };
        TelephonyManager mgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
        if(mgr != null) {
            mgr.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
        }
    }

    public void level_one(View view){

        mp3 = MediaPlayer.create(this, R.raw.d_four);

        PhoneStateListener phoneStateListener = new PhoneStateListener() {
            @Override
            public void onCallStateChanged(int state, String incomingNumber) {
                if (state == TelephonyManager.CALL_STATE_RINGING) {
                    mp3.pause();
                } else if(state == TelephonyManager.CALL_STATE_IDLE) {
                    mp3.start();
                } else if(state == TelephonyManager.CALL_STATE_OFFHOOK) {
                    mp3.pause();
                }
                super.onCallStateChanged(state, incomingNumber);
            }
        };
        TelephonyManager mgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
        if(mgr != null) {
            mgr.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
        }
    }
}

XML：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_delta"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="app.com.example.android.brainboost.delta"
    android:background="#FFFFFF">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        app:srcCompat="@drawable/dlv_8"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:id="@+id/lv8"
        android:onClick="level_eight" />

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        app:srcCompat="@drawable/dlv_7"
        android:layout_below="@+id/lv8"
        android:layout_centerHorizontal="true"
        android:id="@+id/lv7"
        android:onClick="level_seven" />

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        app:srcCompat="@drawable/dlv_6"
        android:id="@+id/lv6"
        android:layout_below="@+id/lv7"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:onClick="level_six" />

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        app:srcCompat="@drawable/dlv_5"
        android:layout_below="@+id/lv6"
        android:layout_centerHorizontal="true"
        android:id="@+id/lv5"
        android:onClick="level_five" />

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        app:srcCompat="@drawable/dlv_4"
        android:layout_below="@+id/lv5"
        android:layout_centerHorizontal="true"
        android:id="@+id/lv4"
        android:onClick="level_four" />

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        app:srcCompat="@drawable/dlv_3"
        android:id="@+id/lv3"
        android:layout_below="@+id/lv4"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:onClick="level_three" />

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        app:srcCompat="@drawable/dlv_2"
        android:id="@+id/lv2"
        android:layout_below="@+id/lv3"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:onClick="level_two" />

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        app:srcCompat="@drawable/dlv_1"
        android:id="@+id/lv1"
        android:onClick="level_one"
        android:layout_below="@+id/lv2"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <ImageView
        app:srcCompat="@drawable/logo"
        android:id="@+id/logo"
        android:layout_width="200dp"
        android:layout_height="75dp"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true" />
</RelativeLayout>

Answer 1

增加应用程序使用的内存的唯一方法是设置清单的应用程序标记中的android:largeHeap="true"。显然设置这个有一些缺点，你可以阅读here。

如果您收到OOM（OutOfMemory）错误，99％是您处理应用内存的错误。如果你需要阅读一个大文件（可能是因为你需要解析内容），请不要将它直接加载到RAM中，而是一次以固定的字节块读取它。

如果没有看到您的代码或者不了解您的意图，我们就无法提供更多有用的信息

要加快Android Studio的速度，您可以增加专用于JVM的RAM。在此处阅读更多信息here和here

Answer 2

我通过改变＆＃34; match-parent＆＃34;中的图像来解决问题。他们适当的dp。

如何在Android中增加内存的明确解释？

2 个答案: